Introduction to Esinstall

Esinstall is a powerful tool designed to optimize the process of installing JavaScript dependencies. It helps in bundling and transforming dependencies for a seamless development experience. With its various APIs, developers can efficiently handle dependencies in modern JavaScript projects. This article explores the essential APIs provided by Esinstall with practical examples.

Key APIs and Examples

Install API

The install API is used to install project dependencies.

  const { install } = require('esinstall'); install(['react', 'react-dom']).then(() => {
  console.log('Dependencies installed');
}).catch(console.error);  

Generate Import Map API

The generateImportMap API creates an import map for the installed dependencies.

  const { generateImportMap } = require('esinstall'); generateImportMap(['react', 'react-dom'], './web_modules').then(importMap => {
  console.log('Import map generated', importMap);
}).catch(console.error);  

Build API

The build API helps in bundling and transforming dependency files.

  const { build } = require('esinstall'); build({
  entryPoints: ['src/index.js'],
  outdir: 'dist',
}).then(() => {
  console.log('Build complete');
}).catch(console.error);  

Resolve API

The resolve API allows resolving module paths.

  const { resolve } = require('esinstall'); resolve('react', './node_modules').then(resolvedPath => {
  console.log('Resolved Path:', resolvedPath);
}).catch(console.error);  

Complete Application Example

Below is an example of a simple application using Esinstall APIs:

  const { install, generateImportMap, build, resolve } = require('esinstall');
async function setupProject() {
  try {
    // Install dependencies
    await install(['react', 'react-dom']);
    console.log('Dependencies installed');

    // Generate import map
    const importMap = await generateImportMap(['react', 'react-dom'], './web_modules');
    console.log('Import map generated', importMap);

    // Resolve module path
    const resolvedPath = await resolve('react', './node_modules');
    console.log('Resolved Path:', resolvedPath);

    // Build the project
    await build({
      entryPoints: ['src/index.js'],
      outdir: 'dist',
    });
    console.log('Build complete');
  } catch (err) {
    console.error(err);
  }
}
setupProject();  

Using Esinstall not only simplifies dependency management but also optimizes it for better performance. Integrating these APIs into your workflow can significantly enhance your development process.

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